Hi
I saw a strange thing last week. I have a batch file that runs at 6am every morning on a 2008 standard 32bit server. It has been running for years without any issues. It invokes Windows Backup and creates a backup of the System State on the local D:
drive.
Last Friday the backup failed. When I opened a command prompt and ran the .cmd file manually, the following was displayed:
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D:\SystemStateBackup>ss-backup
D:\SystemStateBackup>wbadmin start systemstatebackup -backuptarget:D: -quiet
wbadmin 1.0 - Backup command-line tool
(C) Copyright 2004 Microsoft Corp.
Starting System State Backup [22/04/2016 10:04]
Retrieving volume information...
This would backup the system state from volume(s) OS(C,DATAPART1(D to D:.
ERROR - The location for backup is a critical volume.
D:\SystemStateBackup>
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I've never seen this before. I have read Microsoft's article [https://support.microsoft.com/en-us/kb/944530] about this, but Shadow Copy is disabled (it has never been enabled), and there is plenty of space for the System State backup (more than the 2x required
as defined in the article).
I have applied the registry changes and the System State backup is now working again.
However, I would like to know how a volume can suddenly become a 'critical' volume. The OS is on the C drive and the local D drive has always been used for storage. Has anyone has seen this before or know what can suddenly cause this change?
The only change to the machine was that I installed printer monitoring software the day before this occurred. I've run SFC and it reported that everything is fine. I have now uninstalled the printer monitoring software
As I understand it, a 'critical' volume is a volume that contains boot information or which has the OS installed. Can the OS change a storage volume so that it holds this type information without any manual intervention?
Thanks.